The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 1980
Filed:
Jan. 12, 1979
Applicant:
Inventors:
Kristupas Daugiras, Wilmette, IL (US);
Samir M Elguindy, Roselle, IL (US);
Assignee:
Vapor Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F / ;
U.S. Cl.
CPC ...
49363 ;
Abstract
A door operator including a unique electrical drive motor and a linkage arrangement having a drive bar applying driving action through a roller to a slide bar multiplying level wherein the multiplying lever is pivotally mounted at one end and slidably engaging a roller near the other end which is mounted on a slidable door.
Daugiras, Kristupas. (1980). Linear output force door operator (U.S. Patent No. 4231192). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4231192
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile